Connected reference marker system

Patent metadata

Field	Value
Publication number	US-12333935-B2
Application number	US-202217835546-A
Country	US
Kind code	B2
Filing date	Jun 8, 2022
Priority date	Jun 15, 2021
Publication date	Jun 17, 2025
Grant date	Jun 17, 2025

Abstract

Provided herein is technology relating to automated driving and particularly, but not exclusively, to a connected reference marker technology configured to serve automated driving systems by providing, supplementing, and/or enhancing autonomous driving functions for connected automated vehicles under normal and abnormal driving scenarios.

First claim

We claim:

1. A communication-based connected reference marker system (C-CRM System) comprising a network of Connected Reference Markers (CRM) installed along a roadway, a Central Operations Unit (COU), a roadside communication system, an Onboard Module 1 (OBM1) installed on a vehicle, and a network of Wireless Signal Unit (WSU) installed along the roadway,
wherein a CRM of the network of CRMs provides a local location reference and/or an object reference to support identifying the locations and positions of objects on the roadway and in the driving environment for the vehicle; and detects and identifies objects on the roadway and in the driving environment for the vehicle;
wherein the COU manages and operates local location relationship tables for the network of CRMs, virtual roadway configuration information for the roadway, or local location relationship tables for key points of a central line of a driving lane; and transmits the local location relationship tables, the virtual roadway configuration information, or the local location relationship tables for key points of a central line of a driving lane to CRMs and to the vehicle;
wherein said OBM1 receives real-time ranging signals from an WSU of said network of WSUs; calculates distances from the vehicle to at least two WSUs and associated CRMs; and identifies and matches a relative position of the vehicle with respect to CRMs, a virtual roadway configuration, or key points of a central line of a driving lane;
wherein said OBM1 comprises a real-time position identification module configured to perform a position identification method comprising measuring distances from the vehicle to at least two WSUs and associated CRMs; and identifying the relative position of the vehicle with respect to CRMs;
wherein said position identification method is a triangular position identification method and provides a two-dimensional method for a level grade road or a three-dimensional method for a road comprising an upgrade or a downgrade.

2. The C-CRM System of claim 1 , wherein said CRM comprises a data storage component storing a CRM identifier and CRM location information; and a communication module for transmitting the CRM identifier and CRM location information to the vehicle.

3. The C-CRM System of claim 1 , wherein said CRM comprises a data storage component storing the CRM identifier and CRM location information; a data processing unit to process the CRM location information; and a communication module for transmitting the CRM identifier and CRM location information to the vehicle.

4. The C-CRM System of claim 1 , wherein said network of CRM comprises a plurality of CRM installed along a roadway at intervals of from 1 meter to 50 meters.

5. The C-CRM System of claim 1 , wherein said objects on the roadway and in the driving environment for the vehicle comprise a bicycle, pedestrian, animal, obstacle, construction, incident, signage, marking, traffic control device, and/or one or more other vehicles.

6. The C-CRM System of claim 1 , further comprising a virtual roadway configuration module (VRCM) comprising a virtual driving cell identification module, a virtual driving lane identification module, a virtual driving lane group identification module, and a virtual driving grid identification module.

7. The C-CRM System of claim 6 , wherein said VRCM is configured to provide virtual driving lanes that virtually mark actual driving lanes when said actual driving lanes are obscured or when the roads and road markings are not optically detectable by either connected automated vehicle highway (CAVH) system sensors or connected automated vehicle (CAV) sensors.

8. The C-CRM System of claim 6 , wherein said VRCM is configured to provide virtual driving lanes that virtually mark actual driving lanes during a weather event.

9. The C-CRM System of claim 1 , wherein said COU is an HD map free COU and comprises a location relationship identification module to develop a set of local location relationship tables for CRM; a VRCM to provide virtual roadway configuration information comprising virtual driving cells, virtual driving lanes, virtual driving lane groups, and a virtual driving grid; and a communication module for transmitting said local location relationship tables and said virtual roadway configuration information to CRMs and to the vehicle.

10. The C-CRM System of claim 1 , wherein said COU comprises a location relationship identification module to develop a set of local location relationship tables for CRM and key points of a central line of a driving lane; a VRCM to provide virtual roadway configuration information comprising virtual driving cells, virtual driving lanes, virtual driving lane groups, and a virtual driving grid; a high-definition map including roadway lane configuration and CRM location information; and a communication module for transmitting said local location relationship tables, said virtual roadway configuration information, and said HD map to CRMs and to the vehicle.

11. The C-CRM System of claim 1 , wherein a CRM stores said local location relationship tables and said virtual roadway configuration information and transmits said local location relationship tables and said virtual roadway configuration information to the vehicle driving by said CRM.

12. The C-CRM System of claim 1 , wherein said COU transmits said local location relationship tables and said virtual roadway configuration information to CRM.

13. The C-CRM System of claim 1 , wherein the roadside communication system is configured to provide communication and information sharing among CRMs, COU, and the vehicle.

14. The C-CRM System of claim 1 , wherein said WSU comprises a wireless signal transmitting device that transmits a ranging signal, wherein said ranging signal is transmitted to the vehicle; said WSU further comprises a power supply.

15. The C-CRM System of claim 1 , wherein said position identification method comprises:
transmitting, by a WSU, a ranging signal;
receiving, by the OBM1, the ranging signal and WSU location information; and
computing, by the real-time position identification module, the distances between the vehicle and the WSUs and associated CRMs using the ranging signal and the WSU location information.

16. The C-CRM System of claim 1 , wherein said vehicle uses the vehicle real-time position information, virtual roadway configuration information, or a local location relationship table of key points of a central line of a driving lane to maintain lane keeping.

17. The C-CRM System of claim 1 , wherein said vehicle uses the vehicle real-time position information, virtual roadway configuration information, or a local location relationship table of key points of a central line of a driving lane to perform longitudinal and lateral movement within a virtual driving cell of a virtual driving grid.

18. The C-CRM System of claim 1 , wherein one or more of the CRM, COU, roadside communication system, OBM1, and/or WSU is a physical subsystem.

19. The C-CRM System of claim 1 , configured to support an automated driving system (ADS).

20. An ADS comprising one or more Connected Reference Markers and an OBM1, wherein the C-CRM System of claim 1 is configured to support said ADS.

21. The ADS of claim 20 , wherein said C-CRM System is configured to support the ADS for all weather conditions.

22. The ADS of claim 20 , wherein said C-CRM System is configured to support the ADS when the roads and road markings are not optically detectable by either CAVH s

Assignees

• Cavh Llc

Inventors

• Ran Bin
• Shi Kunsong
• Lu Wenqi
• Cheng Yang
• Zhang Hongbin
• Shi Haotian
• Chen Tianyi
• Liang Bingjie
• Yao Yifan
• Wu Keshu
• Fu Sicheng

Classifications

• G08G1/0116 Primary

  from roadside infrastructure, e.g. beacons · CPC title

• B60W30/12

  Lane keeping · CPC title

• B60W2555/20

  Ambient conditions, e.g. wind or rain · CPC title

• B60W2552/53

  Road markings, e.g. lane marker or crosswalk · CPC title

• H04W4/44

  for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H] · CPC title